Tuberculosis (TB) is a contageous disease caused by Mycobacterium tuberculosis . In donesia, lung TB ranks the fifth in the world. The growth of Mycobacterium tuberculosis is influenced by air humidity, air temperature, rainfall and other factors.
The purpose of this study was to find out the pattern of the reltionship between air humidity, air temperature, rainfall and other factors influencing the incident of Lung TB with positive BTA in Batubara District in 2010-2012. This was an ecological study based on place and time by using secondary data.
The spatial data was processed through map overlay technique between the variables of air humidity, air temperature, and rainfall and the case of Lung TB with positive BTA per subdistrict by using graphic and supported by correlation statistical tests. The data obtained were tested and analyzed through univariate analysis, bivariate analysis using Person Moment correlation analytical test and multivariate analysis by using multiple linear regression tests.
The result of this study showed that there was a significan correlation between the air humidity with r = 0,428 and air temperature with r = 0,271 and rainfall with r = 0,310 and the case of Lung TB with positive BTA in Batubara District in 2010, 2011, 2012. The result of multivariate analysis also showed that there was a significant correlation between the air humidity with p = 0.011 and air temperature with p = 0.008 and rainfall with p = 0.021.
The provision and presentation of data to monitor the spread of the disease and the routine evaluation for the effectiveness of Lung TB with positive BTA control program can usew spatial approach to be considered in the planning the Lung TB with positive BTA control program.